Reinterventions exploration

Controling Variables

cat(controlling_vars %>% as.yaml())

- Age
- Gender
- Site
- Prior Spine Surgery
- ASA classification
- 3CO
- Pelvic Fixation
- Number of Posterior Instrumented Levels
- SPOs
- BMI_First Visit
- Osteoporosis / osteopenia
- LGap
- Global Tilt
- ideal LL
- Lordosis (top of L1-S1)
- RLL
- ODI - Score (%)_First Visit
- SRS22 - SRS Total score_First Visit
- SF36 - PCS_First Visit
- SF36 - MCS_First Visit
- Major curve Cobb angle

Proportion of reinterventions by year

   year  N prop
1:    1 59 35.8
2:    2 27 16.4
3:    3 19 11.5
4:    4 20 12.1
5:    5 15  9.1
6:    6 10  6.1
7:    7  7  4.2
8:    8  7  4.2
9:    9  1  0.6

Reinterventions Impact

Dilution effect of odi: time since last operation (controlling by same variables plus number of reinterventions and outcome year) in first 6 years.

Dilution effect of srss: time since last operation (controlling by same variables plus number of reinterventions and outcome year) in first 5 years.

Dilution effect of pcs: time since last operation (controlling by same variables plus number of reinterventions and outcome year) in first 6 years.

Dilution effect of mcs: time since last operation (controlling by same variables plus number of reinterventions and outcome year) in first years.

Time Last Operation Impact

Hospitalization Time Impact

Blood Loss Impact

Surgical Time Impact